NTE870

Integrated Circuit

Dual Operational Transconductance Amp

Description:

The NTE870 consists of two current controlled transconductance amplifiers each with differential in-

puts and a push–pull output. The two amplifiers share common supplies but otherwise operate inde-

pendently. Linearizing diodes are provided at the inputs to reduce distortion and allow higher input

levels resulting in a 10dB signal–to–noise improvement referenced to 0.5 percent THD. Controlled

impedance buffers are provided which are especially designed to complement the dynamic range of

the amplifiers.

Supply Voltage, V+/V–

36V or

±18V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±5V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

20mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

570mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V+ to V–

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–20

° to +75°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

° to +125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

–

0.4

5.0

mV

Input Offset Voltage

–

0.3

5.0

mV

–

0.5

5.0

mV

Input Offset Change

5

–

0.1

–

mV

Input Bias Current

–

0.4

5.0

µA

–

1.0

8.0

µA